V-block attachment



Nov. 16, 1965 H. G. ANDREW 3,218,059

V-BLOCK ATTACHMENT Filed April 17, 1965 I NVENTOR. HAROLD 6- ANOREW United States Patent 3,218,059 V-BLOCK ATTACHMENT Harold G. Andrew, 143 Tanglewood Road, Waterbury, Conn. Filed Apr. 17, 1963, Ser. No. 273,657 1 Claim. (Cl. 269-271) This invention relates to V-blocks, and more particularly to a small V-shaped insert to be fitted within the V- shaped recess of a wider universal V-block, in order to facilitate grinding, milling, slotting, drilling or otherwise machining short shouldered punches, studs, etc.

One object of the present invention is to devise a V- block insert of the above nature which will permit the shouldered head of a punch or other work piece to be clear of the larger V-block so that the smaller diameter section of said work piece can be machined.

A further object is to provide a V-block insert of the above nature which may be held within the recess of the V-block by means of the usual yoke clamp embracing the sides of said V-block.

A further object is to provide a device of the above nature which will be simple in construction, inexpensive to manufacture, easy to install and manipulate, compact, ornamental in appearance, and very eflicient and durable in use.

With these and other objects in view there has been illustrated on the accompanying drawing one form in which the invention may conveniently be embodied in practice.

In the drawing:

FIG. 1 indicates a perspective view of a standard V- block, in which a small short V-insert has been assembled, and showing a cylindrical shouldered work piece held therein by a yoke clamp in position to be machined.

FIG. 2 is a vertical cross-sectional view of the same, taken along the line 2-2 of FIG. 1, looking in the direction of the arrows.

FIG. 3 is a perspective view of the V-shaped insert, shown by itself.

Referring now to the drawing, in which like reference numerals denote corresponding parts throughout the several views, the numeral indicates a universal V-block of standard construction having a pair of flat base sections 11, 11 between which is a central upstanding V- shaped recess 12 having a small round groove 13 at the top apex thereof. The numerals 14, 14 indicate flat top sections of the V-block 10 between which is a downwardly extending V-recess 15 defined by two inclined surfaces and provided at the apex of said surfaces with a small round groove 16. The two inclined surfaces forming the recess 15 and the groove 16 all extend the full length of the block 10.

The V-block 10 is also provided on its opposite sides with a pair of horizontal rectangular slots 17, 18 for receiving a pair of inturned lugs 20, 21 on the bottom ends of a pair of side legs 18a and 18b of a U-shaped yoke clamp 19 of the usual construction.

The top of the yoke clamp 19 is provided with a square boss 22 within which is a vertical tapped hole 23 having a vertical clamp screw 24 mounted therein, said screw having an upper head 25 and a reduced lower end 25a.

The head 25 is provided with a polygonal recess 26 which is adapted to receive a polygonal tightening tool, such as an Allen screwdriver.

A work piece 27 supported by the V-block is shown as comprising a cylindrical stud having an enlarged outer head 28 at the right hand end thereof. This work piece 27 rests within a small hardened steel V-block insert 29 considerably shorter than the V-block 10 and having a downwardly extending V-shaped recess 30 provided with a sharp bottom apex 31. The recess 30 terminates in a round horizontal groove 32, and the sides of said insert have inclined sections 33, 34 and flat tops 35, 36. The numeral 37, as shown in dotted lines in FIG. 2, indicates a drill for machining a hole near the end of the smaller diameter section of the work piece 27.

Operation After the small V-insert 29 has been placed within the V-shaped recess 15 of the longer V-block 10, the work piece 27 may be located within the V-shaped recess 30 of the insert, as shown in FIGS. 1 and 2 with its head 28 located between the insert 29 and the adjacent end of the V-block 10. The vertical screw 24 will then be driven downwardly in the yoke clamp 19 by means of the screwdriver or other tool, not shown, to clamp the work piece 27 tightly within the V-shaped insert 29. Any desired machining operation may then be performed on said work piece 27 with the V-block positioned either as shown in FIG. 2 to support the work piece in a horizontal position or with the V-block turned on end to support the work piece in a vertical position with its head 28 lowermost.

While there has been disclosed in this specification one form in which the invention may be embodied, it is to be understood that this form is shown for the purpose of illustration only, and that the invention is not limited to this specific disclosure but may be modified and embodied in various other equivalent forms without departing from its spirit. In short, the invention includes all the modifications and embodiments coming within the scope of the following claim.

Having thus fully described the invention what is claimed as new and for which it is desired to secure Letters Patent is:

In a V-block the combination comprising a block having a V-shaped upper recess formed therein and defined by two inclined surfaces which extend the full length of said block, a V-shaped insert of shorter length than said V-block and adapted to rest within said V-shaped recess of said block, said insert having a V-shaped upper recess, and means to clamp a work piece in the V-recess of said insert while said work piece is being machined by a drill or other tool.

References Cited by the Examiner UNITED STATES PATENTS 1,705,629 3/ 1929 Wildbore 269246 X 1,802,914 4/1931 Gruber 269-426 X 2,389,243 11/ 1945 Tillett.

WILLIAM W. DYER, 111., Primary Examiner. ROBERT C. RIORDON, Examiner. 

